No Googling now. If you don't know, guess which of these really happened, THEN click through. No mousing over to look where the links go either, smart guy. In chronological order of when they occurred or would have occurred:

- The U.S. military investigated LSD as a potential chemical warfare agent in the 1960s - but the first intentional use of biological or chemical warfare was in the seventh century B.C., when the Assyrians deliberately poisoned wells with ergot, a fungus which produces LSD-like compounds.

- A lost phalanx of Alexander the Great entered China and crushed the Qin outpost they encountered